It works perfectly in Safari & Google Chrome, but somehow my posts' appearance change in IE8.
Good to know: I work with custom post type, but created a div.post around them. That works for all browsers except IE.

I installed the version you provided here, but somehow IE8 is still giving me a hard time. It seems like the different parts of the div.post can't find their css.

The strange thing is (while using the Developer Tools in IE8) pressing the edit-button, not changing a thing and going back to the normal mode makes everything turn out right again. So the code seems to be ok, but IE8 is nothing interpreting it well at first.